[setquk]

As someone who switched away from RPN (well RPL) I disagree. I was an HP48/50 series fanboy since about 1995 and before that RPN on a HP41. I was the weird kid at school who didn’t have a normal calculator and the teachers couldn’t help me.

However I bought a Casio FX991EX recently after using my daughter’s unit which has a modern entry system, solver, engineering units, conversions and dual power. It’s pretty much perfect. Anything else more complicated, I roll out python, scipy, sympy etc.

[FractalLP]

Yea, it's much easier to enter a matrix on a modern Casio than the HP calcs and requires fewer keystrokes I believe. I guess navigation of the indices takes up time on the Casio, but it is so intuitive.

[siproprio]

The FX991EX is just awesome!